Niels bendixen



N. BENDIXEN.

MEANS FOR. MOLDING POWDERED SUBSTANCES.

APPLICATION FILED MAR. 5. 1919.

1,309,112. Patented July 8,1919.

. f- --f Fig.1. 2

21 a 03 b e a 1 I N I 8411? ii a 2 h 5 g 6 a warren NIELS BENDIXEN, '01s HIGH'E-IOLiBORN, =LONDON, ENGLAND;

MEAN S FOB -1VIOLDI NG POWDERED SUBSTANCES.

Spe'ci'fic'ation of Letters Patent. .Patente d J 11y 8,1 .1919,

Application fiIedM'areh 5, 1919. Serial No. 280,829.

To all whom it may concern) I Be it known that I, NIELS BENDIXE a SHbJGCt of'the King of Denmark, residmg at High 'Holborn, in the county of 'London, England, have invented certain new and usefulImprovements inlvleansforiMolcb ing Powdered Substances, of which the following 'is'a full, clear, andcxact description. p I

In machines for molding or compressing powdered substances in which the" powder is -fed to the molds "byme'ans of a hopper it has'been proposed to employwithinithe hopper vertical wires, strips or rods of metal with their lower ends in close 'proximityto the molds, and to give'to 'suchwires, strips or'rods of metal an up and down motion. In other molding machines it has been proposed to employ aseriesof par'allel hori zontal "wires in the charging devic'e and to give the said wires a reciprocating move ment in a horizontal'plane. I

Whenmolding or compressing some'powdered substances which readily adhere under pressuresuch as dried'eggs'it has been found that some forms ofvibrating' devices in the feeding hopper are actually detrimental as they causethe material to adhere and form lumps within the hopper andother devices when acting upon'm1xtures of substances of different specific gravlties have a tend- I encyto cause the 'heavier' material in-the mixture to fall to the lower part of the hopper and separate fromthelightermatearm fixed at its upper end and carrying at its lower end separate extensions or vibrators for each mold, each extension or vibrator having a narrow cross section and reciprocating practically horizontally at its lower endin close proximity to'the mouth of'a mold.

Onemethod of carrying the invention into effect is illustrated in the accompanying drawings in which Figure 1 is atransverse section of a moldingma'chine'takenthrough the-hopper and molds andFigJQ'isa longi tudinal section of the same machine also taken througlrthe hopper and molds.

Fig.3 is afront elevation of amodified form'of'vibratorto that shown in Figs. 1 and 2. i The vibrator'orwibrators may be operated mechanicallyyasby a sliding hopper coming into contact therewith 'wh'en'jthe hopper is in'positionf todeliver' the material to thefmolds' or molds.

As shown in the drawings themach-ine consists of a table a having a raised edge a on'three sidesthereof and.'guidesbupon its upper surface in 'which is mounted a sliding hopper c. This'latteris carried by a plate 0 having apertures 0 throughwhich the material is delivered'to' a series of molds dthe upper edgeso'f which are flush with a plate 6 over which the plate 0 slides. "A

stopb is fixed on oneof the guides 6' against which'actsa projection 0 on theplateeito limit" the motion of the f hopper c when'it is in position to deliver the material to the molds. The front part of the sliding'plate 0 acts as a cover forthe molds d. Each mold is provided with a spring arm or vibrator 7 which is bent rearwardly so that the upper or middle part of it comes into contact with the hopper c as this latter moves forward and approaches or arrives I at the 'positlon to deliver the material. The

lower part (if the spring armor vibrator] 7 will consequently havemore motion-than its upper part within the material to be compressed. this upper part, and owing to its narrow width, it will have little or notendency to compress the material in front of it. The spring arms f may be conveniently fixed at their upper ends to a bent arm or bracket 7 carried by the upper surface of the table a. Each mold cl contains a vertically moving I plunger 9 and the plungers are all connected at their lowerendsby the bar g. A bifurcated lever it operated by hand is pivoted to a part a of the table a and the inner end Owing to 'thesmaller motion of of the lever is connected to the end bar 9' by a link 9 The bar 9 slides upon the rods g carried by the table a and each rod g is provided with a sleeve 9* which acts as a stop for the bar g so that the plungers 9 cannot be caused to project above the upper surfaces of the molds d.

2' is a handle fixed to the hopper c and plate 0 by which the hopper is moved forward and backward. j is. a tray to receive the molded cakes. Instead of employing separate spring vibrators f for each mold (Z as shown in Fig. 1, I may employ a single vibrating arm F having a narrow cross rod F carrying separate extensions or vibrators F in close proximity to the mouths of the molds (Z. The vibratin arm F will be operated as hereinbefore escribed.

The operation of the machine is as follows:

The hopper c is caused to slide a few times over the molds d and it operates the vibrators f at each forward movement. The molds d being filled the hopper c is pulled back until the front part of the sliding plate 0 covers the molds (Z. The plungers g are then raised by means of the hand lever h and the material is compressed. The hopper 0 is then pulled farther back, opening the molds (l, and the plunger-s g are raised to lift the cakes clear of the molds (Z. The hopper c is then pushed forward and the front edge of the sliding plate 0 pushes the cakes away from the molds cl onto the table a or into a tray placed to receive them.

What I claim as my invention is 1. In means for molding powdered substances the combination of a sliding hopper having apertures in its lower part, a plurality of molds over which such hopper slides, spring arms of narrow cross section located within the hopper such spring arms being fixed at their upper ends and vibrating almost horizontally at their lower ends adjacent to the molds and means for causing the spring arms to vibrate substantially as set forth.

2., In means for molding powdered substances the combination of a sliding hopper having apertures in its lower part, a plurality of molds over which the hopper slides and curved spring arms of narrow cross section located within the hopper with which arms the hopper comes in contact when it approaches the position to deliver the powdered substance to the molds substantially as set forth.

3. In means for molding powdered substances the combination of a table, molds carried by said table, guides carried b said table, a plate sliding in said guides an hav ing apertures therein corresponding with the molds, spring arms of narrow cross sec tion located within the hopper and with which the hopper comes in contact in its forward motion, such spring arms being fixed at their upper ends and vibrating almost horizontally at their lower ends adjacent to the molds substantially as set forth.

4. In means for molding powdered substances the combination of a sliding hopper having apertures in its lower part, a table on which said hopper slides, a plurality of molds carried by said table, a bracket carried by said table, and a plurality of spring arms of narrow cross section fixed at their upper ends to said bracket and vibrating almost horizontally at their lower ends adjacent to the molds substantially ,as set forth.

5. In means for molding powdered substances the combination of a table, a fixed plate carried by said table, molds carried by said fixed plate, a sliding plate having apertures corresponding with the molds, guides for said sliding plate, a hopper carried by the sliding plate, a bracket carried by said table and a plurality of spring arms of narrow cross section fixed at their upper ends to said bracket and located within said h0p per so that the hopper makes contact with the spring arms in its forward motion substantially as set forth.

6. In means for molding powdered substances the combination of a table, a hopper sliding on said table and having apertures in its lower part, molds carried by said table, plungers acting in said molds, a bracket carried by said table and a plurality of spring arms of narrow cross section fixed at their upper ends to said bracket and vibrating almost horizontally at their lower ends adjacent to the molds substantially as set forth.

In witness whereof I have hereunto set my hand.

NIELS BENDIXEV.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

